Market observatory
Economic observatory / digital systems
Digital Platform Systems
Explore separate histories of search referrals, browser use, mobile operating systems, social referrals, and AI assistant use. Different denominators prevent a combined ecosystem market-share score.
- Evidence systems
- 5 separate public proxies
- HHI anchors
- 17 2023-2026
- Share rows
- 146 41 histories
- Attributed operators
- 20 3 cross-system
- Measurement sources
- 5 full source custody
Public web-analytics screensExact same-month anchorsDefinition-aware HHIOfficial product attributionNo combined platform-power measure
Bounded platform evidence
Five systems, one research surface
5 systems / 17 HHI anchors / 146 exact share rows- Systems
- 5
- HHI anchors
- 17
- Share rows
- 146
- Operators
- 20
- Sources
- 5
HHI observation ledger
17 exact concentration anchors
| System | Year | HHI | Class | Status | Source | Method |
|---|---|---|---|---|---|---|
| Search engines | 2023 | 7,950 | highly concentrated | estimated publicmedium | StatCounter Global StatsSearch engine market share in United States of America April 2023 | HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent. |
| Search engines | 2024 | 7,575 | highly concentrated | estimated publicmedium | StatCounter Global StatsSearch engine market share in United States of America April 2024 | HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent. |
| Search engines | 2025 | 7,589 | highly concentrated | estimated publicmedium | StatCounter Global StatsSearch engine market share in United States of America April 2025 | HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent. |
| Search engines | 2026 | 7,359 | highly concentrated | estimated publicmedium | StatCounter Global StatsSearch engine market share in United States of America April 2026 | HHI is computed from listed StatCounter percentages and a small residual Other category equal to 100 minus listed shares. |
| Browsers | 2023 | 3,664 | highly concentrated | estimated publicmedium | StatCounter Global StatsBrowser market share in United States of America April 2023 | HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent. |
| Browsers | 2024 | 3,846 | highly concentrated | estimated publicmedium | StatCounter Global StatsBrowser market share in United States of America April 2024 | HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent. |
| Browsers | 2025 | 3,720 | highly concentrated | estimated publicmedium | StatCounter Global StatsBrowser market share in United States of America April 2025 | HHI is computed from six named StatCounter shares and a residual Other category that closes coverage to 100 percent. |
| Browsers | 2026 | 3,612 | highly concentrated | estimated publicmedium | StatCounter Global StatsBrowser market share in United States of America April 2026 | HHI is computed from listed StatCounter percentages and a residual Other category equal to 100 minus listed shares. |
| Mobile operating systems | 2023 | 5,157 | highly concentrated | estimated publicmedium | StatCounter Global StatsMobile operating system market share in United States of America April 2023 | HHI is computed from every category in the pinned StatCounter April mobile operating-system row; source labels and rounding are preserved. |
| Mobile operating systems | 2024 | 5,055 | highly concentrated | estimated publicmedium | StatCounter Global StatsMobile operating system market share in United States of America April 2024 | HHI is computed from every category in the pinned StatCounter April mobile operating-system row; source labels and rounding are preserved. |
| Mobile operating systems | 2025 | 5,094 | highly concentrated | estimated publicmedium | StatCounter Global StatsMobile operating system market share in United States of America April 2025 | HHI is computed from every category in the pinned StatCounter April mobile operating-system row; source labels and rounding are preserved. |
| Mobile operating systems | 2026 | 5,337 | highly concentrated | estimated publicmedium | StatCounter Global StatsMobile operating system market share in United States of America April 2026 | HHI is computed from every category in the pinned StatCounter April mobile operating-system row; source labels and rounding are preserved. |
| Social referrals | 2023 | 3,393 | highly concentrated | estimated publicmedium | StatCounter Global StatsSocial media referral share in United States of America April 2023 | HHI is computed from every category in the pinned StatCounter April social-media row; the denominator is outbound referral traffic to sampled third-party websites. |
| Social referrals | 2024 | 2,838 | highly concentrated | estimated publicmedium | StatCounter Global StatsSocial media referral share in United States of America April 2024 | HHI is computed from every category in the pinned StatCounter April social-media row; the denominator is outbound referral traffic to sampled third-party websites. |
| Social referrals | 2025 | 3,804 | highly concentrated | estimated publicmedium | StatCounter Global StatsSocial media referral share in United States of America April 2025 | HHI is computed from every category in the pinned StatCounter April social-media row; the denominator is outbound referral traffic to sampled third-party websites. |
| Social referrals | 2026 | 4,995 | highly concentrated | estimated publicmedium | StatCounter Global StatsSocial media referral share in United States of America April 2026 | HHI is computed from every category in the pinned StatCounter April social-media row; the denominator is outbound referral traffic to sampled third-party websites. |
| AI assistants | 2026 | 4,804 | highly concentrated | estimated publicmedium | StatCounter Global StatsAI chatbot market share in United States of America May 2026 | HHI is computed from listed StatCounter percentages, which sum to 100 across tracked assistants. |
Participant share ledger
146 exact category-year rows
Measurement source custody
5 public measurement sources
No ecosystem score.These five screens do not define one digital-platform market. Each keeps its own product boundary, page-view or referral denominator, participant categories, month, and permitted use. HHI values are never added, averaged, ranked into an ecosystem score, or treated as evidence of conduct.